The Naval Air Systems Command (NAVAIR) is seeking information from industry on capabilities to design, fabricate, and support the Radio Tuner Panel 4230, Direction Finder 500 system, High Frequency 9500M system, and High-Speed Modem 205 for the P-8A aircraft. This is a sources sought notice for market research only, not a request for proposals, and the government will not award a contract or pay for information submitted. The anticipated award is in the first quarter of Government Fiscal Year 2027, with deliveries 12 months after award. The planned base year includes approximately four shipsets for Foreign Military Sales, with two option years for an estimated thirty shipsets per year for U.S. Navy and FMS requirements. No budget amount is specified, and the location for performance of services is not mentioned.